However it looks like they just have on/off switches. They aren't something that you can interface with programmatically.

So I was thinking, if I could find a way to cut the power to the USB port, that would allow me to turn the lights on and off with my app. However I cant find any way to cut the power to the USB port. Is this possible?

Which of these vars specifies which USB port I'm disabling? the 4?
–
SugitimeFeb 4 '13 at 19:13

This actually doesn't cut power to USB Ports but disables them for USB Storage Devices. And that too is not for a specific port, but for all ports. And the "4" here is the values for "Disable" and "3" for "Enable".
–
RocketRu1Jun 29 '14 at 18:32